package com.itheima.filters;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.List;
@Component
public class MyGlobalFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        List<String> token = request.getQueryParams().get("token");
        if(CollectionUtils.isEmpty(token))
        {
            ServerHttpResponse response = exchange.getResponse();
            response.setStatusCode(HttpStatus.FORBIDDEN);
            return response.setComplete();
        }
      return  chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return -50;
    }
}
